EP 1420872 A1 20040526 - Process for rejuvenating a spent catalyst
Title (en)
Process for rejuvenating a spent catalyst
Title (de)
Verfahren zur Aufbereitung eines gebrauchten Katalysators
Title (fr)
Procédé de réactivation d'un catalyseur usé
Publication
Application
Priority
- US 0224848 W 20020806
- US 93358601 A 20010821
Abstract (en)
[origin: WO03018179A1] A catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated with periodic alternations between lean and stoichiometric or rich conditions. The trap comprises a catalytic trap material and a refractory carrier member on which the catalytic trap material is disposed. The catalytic trap material comprises: (i) a refractory metal oxide support; (ii) a catalytic component effective for promoting the reduction of NOx under stoichiometric or rich conditions; and (iii) a NOx sorbent. The NOx sorbent comprises a metal oxide selected from the group consisting of one or alkali metal oxides, alkaline earth metal oxides and mixtures of one or more alkali metal oxides and alkaline earth metal oxides. The manganese component is selected from the group consisting of: (1) a manganese oxide, (2) a mixed oxide of manganese and a transition metal and/or a rare earth metal, (3) a compound of an alkali metal and a manganese oxide, (4) a compound of an alkaline earth metal and a manganese oxide and (5) mixtures of the foregoing oxides and compounds.
IPC 1-7
IPC 8 full level
B01D 53/94 (2006.01); B01J 23/34 (2006.01); B01J 23/656 (2006.01); B01J 23/92 (2006.01); F01N 3/08 (2006.01); B01J 37/02 (2006.01)
CPC (source: EP US)
B01D 53/9431 (2013.01 - EP US); B01J 23/34 (2013.01 - EP US); B01J 23/6562 (2013.01 - EP US); B01J 23/92 (2013.01 - EP US); F01N 3/0814 (2013.01 - EP US); F01N 3/0842 (2013.01 - EP US); B01J 37/0201 (2013.01 - EP US); B01J 37/0242 (2013.01 - EP US); B01J 37/0248 (2013.01 - EP US); F01N 2250/12 (2013.01 - EP US); F01N 2370/02 (2013.01 - EP US); F01N 2370/22 (2013.01 - EP US); Y02C 20/10 (2013.01 - EP US); Y02T 10/12 (2013.01 - EP US)
Citation (search report)
See references of WO 03018179A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03018179 A1 20030306; WO 03018179 B1 20030410; AT E375819 T1 20071115; DE 60223049 D1 20071129; DE 60223049 T2 20080724; EP 1420872 A1 20040526; EP 1420872 B1 20071017; US 2003045424 A1 20030306; US 6727202 B2 20040427
DOCDB simple family (application)
US 0224848 W 20020806; AT 02759273 T 20020806; DE 60223049 T 20020806; EP 02759273 A 20020806; US 93358601 A 20010821